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[vsnet-alert 946] rare outburst of MM Sco

  The dwarf nova MM Sco is undergoing a relatively rare outburst as
reported by R. Stubbings.

  YYMMDD(UT)   mag  observer
  970527.438   138  (R. Stubbings)
  970527.590   137  (R. Stubbings)

  MM Sco has a relatively large outburst amplitude (13.0-18.5B in Downes
et al. 1997; faint quiescent counterpart indicated, see also Vogt and
Bateson 1982, A&AS, 48, 383).  GCVS 3 gave a cycle length of >500 days,
while GCVS 4 gives 28: days.  Vanmunster and Howell's famous "Outburst
Activity Database" lists only two outbursts.  More observations are clearly
needed.

Regards,
Taichi Kato

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